The SendInput function synthesizes keystrokes, mouse motions, and button clicks to the currently active window

C# Signature:

        /// <summary>
        /// Synthesizes keystrokes, mouse motions, and button clicks.
        /// </summary>
        [DllImport("user32.dll")]
        internal static extern UINT SendInput(
        UINT nInputs,
        [MarshalAs(UnmanagedType.LPArray), In] INPUT[] pInputs,
        int cbSize);

VB.NET Signature:

Private Declare Function SendInput Lib "user32.dll" (ByVal cInputs As Integer, ByRef pInputs As INPUT, ByVal cbSize As Integer) As Integer

C# User-Defined Types:

Notes:

look over here.

Tips & Tricks:

Please add some!

User-Defined Field Types:

INPUT

Sample Code:

        var pInputs = new[]
        {
        new StructLib.INPUT()
        {
            type = EnumLib.INPUT_TYPE.INPUT_KEYBOARD,
            ki = new StructLib.KEYBDINPUT()
                {
                wScan = EnumLib.ScanCodeShort.KEY_S,
                wVk = EnumLib.VirtualKeyShort.KEY_S
                }
        },
        new StructLib.INPUT()
        {
            type = EnumLib.INPUT_TYPE.INPUT_KEYBOARD,
            ki = new StructLib.KEYBDINPUT()
                {
                wScan = EnumLib.ScanCodeShort.KEY_S,
                wVk = EnumLib.VirtualKeyShort.KEY_S,
                dwFlags = EnumLib.KEYEVENTF.KEYUP
                }
        },
        new StructLib.INPUT()
        {
            type = EnumLib.INPUT_TYPE.INPUT_KEYBOARD,
            ki = new StructLib.KEYBDINPUT()
                {
                wScan = EnumLib.ScanCodeShort.KEY_S,
                wVk = EnumLib.VirtualKeyShort.KEY_S
                }
        },
        new StructLib.INPUT()
        {
            type = EnumLib.INPUT_TYPE.INPUT_KEYBOARD,
            ki = new StructLib.KEYBDINPUT()
                {
                wScan = EnumLib.ScanCodeShort.KEY_S,
                wVk = EnumLib.VirtualKeyShort.KEY_S,
                dwFlags = EnumLib.KEYEVENTF.KEYUP
                }
        },
        new StructLib.INPUT()
        {
            type = EnumLib.INPUT_TYPE.INPUT_KEYBOARD,
            ki = new StructLib.KEYBDINPUT()
                {
                wScan = EnumLib.ScanCodeShort.KEY_S,
                wVk = EnumLib.VirtualKeyShort.KEY_S
                }
        },
        new StructLib.INPUT()
        {
            type = EnumLib.INPUT_TYPE.INPUT_KEYBOARD,
            ki = new StructLib.KEYBDINPUT()
                {
                wScan = EnumLib.ScanCodeShort.KEY_S,
                wVk = EnumLib.VirtualKeyShort.KEY_S,
                dwFlags = EnumLib.KEYEVENTF.KEYUP
                }
        }
        };
        var hWindow = Api.user32.FindWindow("notepad", null);
        Api.user32.SetForegroundWindow(hWindow);
        Thread.Sleep(2500);
        Api.user32.SendInput(
        (uint)pInputs.Length, pInputs, StructLib.INPUT.Size);

Please edit this page!

Do you have...

• helpful tips or sample code to share for using this API in managed code?
• corrections to the existing content?
• variations of the signature you want to share?
• additional languages you want to include?

Select "Edit This Page" on the right hand toolbar and edit it! Or add new pages containing supporting types needed for this API (structures, delegates, and more).